(travel, aviation) the part of a boarding pass, or a separate stub, that identifies the passengers baggage and permits it to be collected at the destination.

plural of perpetual check

plural of e-check

(chess) A draw forced by one player by putting the opponent's king in a potentially infinite series of checks.

(US) A check (cheque) for which the bank verifies that sufficient funds exist in the account to cover the check, and so certifies, at the time the check is written.

plural of certified check

To examine or inspect something in order to determine its condition; to check out. / To look after or inquire about someone's well-being.

A hook on the saddle of a harness, over which a checkrein is looped.

A valve in a pipeline which allows the liquid or gas to flow in one direction only.

(idiomatic) To permit someone to continue onward, e.g. through a security checkpoint, after verifying their identity, tickets, etc.